Photograph of a computer diagram entitled "Fig. 2. Schematic of basic registers and data paths". Diagram shows flow of data and instructions through the central processing unit [CPU] for the IBM SYSTEM/360 [S/360] which was developed in 1964.

This is one of a set of photographs showing computers, computer components, computer structure diagrams and computer programmimg instructions, probably used as aids in teaching computing subjects. The diagrams and instructions relate to several pioneer models and systems of stored program computers dating back as far as the 1950s and including CSIRAC (originally known as CSIR Mark 1), Cirrus, Atlas, IBM System/360 , CDC 6600 System, and Illiac IV.